12 14 550 Replacing control unit (DME) (S65)

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Switch off ignition.
DISCONNECT BATTERY .
Remove lower section of MICROFILTER HOUSING on right.

IMPORTANT: Follow instructions for REMOVING AND INSTALLING CONTROL UNITS

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .
Replacement:

IMPORTANT: It is absolutely essential to read out the fault memory with the MoDiC or the BMW DIS and to create a fault memory printout Switch off ignition.

Unlock fasteners (1) from below and slide upwards approx. 10 mm.

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Opening Locks

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Release grommet (2) from electronics box.

Installation:

Make sure grommet (2) is correctly seated in housing (watertightness).

Unlock control unit (3) and raise slightly.

Fig 2: Identifying Electronics Box Grommet, Control Unit And Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plugs (1) using slide in direction of arrow and remove.

Remove control unit (2).

Installation:

Replacement:

Note device identification number and coding.

Fig 3: Unlocking Plug Connectors

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault message.

Now clear the fault memory.